Adjusting means for cartridge type door control hinges



May 10,

Filed Dec.

J. SWANSON 2 Sheets-Sheet l l l l INVENTOR ALFRED I. SWANSON BYi-ATTORNEY 2 Sheets-Sheet 2 May 10, 1949. J. SWANSON ADJUST MEANS FORCARTRIDGE TYPE DOOR CONTROL HINGES Filed Dec. 7, 1946 FIG. 6.

FIG. 4.

M @i I l INVENTOR ALFRED J. SWANSON i BY ATTORNEY Patented May 10, 1949ADJUSTING MEANS FOR CARTRIDGE TYPE- DOOR GONTROL HINGES.

Alfred .1. Swanson, Hollywood, Calif.

Application December 7, 1946, SerialNo. 714,704

3 e ams- 1 This invention. relates to door closure. control devices andin particular to adjusting means for a cartridge type. door controllinghinge.

One object of my invention is to provide door hinges withinterchangeable and removable cartridge-type control units concentricwith the hinge pins. Another object ofmy invention is to provideadjusting means in a controlling hinge. having a removablecartridgeetypehydr-aulic checking unit for adjusting the relativeaxialposition of the cartridge. and the buttsand for keeping the parts inselected relative positions.

These and other objects are attained by my invention which will beunderstoodf'rom the 01 lowing description, reference being made to theaccompanying drawings in which:

Fig. 1 is a side elevation view partly in section and with parts brokenaway of my hydraulic checking hinge;

Fig. 2 is a side elevational view showingthe cartridge containing anhydraulic checking mechanism;

Fig. 3 is a cross-sectional view taken on the line Ii--.3 of Fig. 1-;

Fig. 4 is a cross-sectional view taken on the line 44 of Fig. 1;

Fig. 5 is a cross-sectional view taken on the line 5-.5 of Fig. 1-;

Fig. 6 is a cross-sectional view taken on the line 6 6 of Fig-.1;

Fig. 7 is a detail sectional view taken on the line 1-1 of Fig. 3;

Fig. 8 isv a fragmentary view taken on the line 8--8 of Fig. 1;

Fig. 9. is an and elevation of the worm.

In general, myinvention relatesto a doorhinge having an hydraulicchecking mechanism for controllin the angular movement of the door, saidchecking mechanism being enclosed in a. removable cartridge which isoperatively encased in the cavity of the outer partcasings attached. tothe two hinge leaves of each hinge.

The removable cartridge I containing the hy- 17 11 kin m ch nism. nudes. Q l i' l cal housing H which is, seated up to. the portion thereofpr ed th. an n ra ce ral co lar '2 in e a it 0f h ow r o ter alf qa i sl3 to which is attached the leai l4, and the upp a sing en lo es t the,co ar he upper part of the cylindrical cartridge. to which attached the,th r af- 1 said pe half casing l5 being non-rqtatably attached to thehexagonal upper end of th hin e pin l-& by m a of a h a ona 1. 9.12 19.i the closed u P end her of art d e a ius ab y held against turning. inthe cavity of the owe half-casing [3 by the. helical pinion or worm 20which is mounted! in, the cylindrical hole 2 ;l drilled; in the junctureoi the casing with the lower leaf, at right angles to. the axis of thecartridge so that the helical threads extend: to engage worm gear teethin the collar of the cartridge.

The worm or helical pin-ion Z0,- is, held in the hole 2! by means of;the aperturedretaining washer 2,3, which is held in. the cavity a ainstone end ofthe pinion by peening or pressing the edge ofthe cavity overthe. washer, or otherwise fastening the washer to the lower leaf. Thepinionv Z0; is conveniently provided with a hexagonal socket 2%, whichmay be turned by means of a suitable tool inserted through the opening25. of the washer 23-. Indexing marks 13 and M may be provided on thecollar I12 and the. adjacent surface of the-lower half-.casing l 3.

The central collar I12 of the cartridge is pro? vided with teeth 22-adapted for engagement with the helical threactsv of the pinion 20-. Byturning the pinion 20, the axial position of the hydraulic cartridge l0.relative to. the. lower leaf L4,, may be adjusted. After the adjustmentis made, the pinion 20 continues to prevent the cartridge In. fromturningin the lower halfcasing l3, so that; the hydraulic checkingmechanism will function to control the movement of the hinge.

The hydraulic mechanism is enclosed in the hydraulic cartridge. unit towhich, as previously mentioned, consists; of a lilldrical cartridgehousing II provided; its central portion with an outwardly extendingcollar l2, The hexag- Onal extension I! of the hinge pin l8 extendsabove the. cap 28- wh ich closes the upper end of the. cartridge housingH. In the opposite end of the cartridge housing l;l there is provided abottom closure. 3:0 having a bearing 3 l on the hinge pin 1.8.

The hydraulicv checking mechanism consists of a rotary s o 3 e whed tohe in e in l8 n a dric Wo i h mber- 34 h i a. se mental partition memberor darn 35. The work: ing chamber 34 is for-med bythe inner surface ofthe cartridge housing |,l the radial ends of the dam 35, the bottomclosing member 30 and the upper closing surface. consisting of thebottom 3.! of the reservoir bushing 38'. A bearing for the lowerend ofthe hinge pin it} is formed by reduping the diameter of the hinge pinbelow the El on to t: a 91s in the. closin m b r 3 5: fo the cartri gous The. rotation of the hinge pin it causes the angular movementtherewith of the rotary piston 33 in the working chamber 34 from oneedge of the dam 35 to the other edge, the dam 35 extending between thewall of the cartridge housing 5 I to the surface of the hinge pin. Asthe piston moves, the hydraulic fluid is forced through severalcontrolled conduits which act to regulate the hydraulic friction in themovement of the hydraulic fluid from one side of the piston to theother. One control consists of metering pin 39 operating in a hole 40concentric with and in the center of the hinge pin It. At right anglesto the hinge pin a bypass conduit 4! through the hinge pin is provided,the metering pin, in the portion adjacent the conduit ll, being taperedso that the flow of hydraulic fluid may be closely regulated by theendwise movement of the metering pin 39. The pin 39 is positioned by thethreaded plug 42 which is threaded into a hole in the upper part of thehinge pin, the metering pin 39 being held upwardly by a compressed coilspring E3 in the bottom of the hole Ail. A one-way bypass conduit fromone side of the piston to the other is provided by the hole M leadingthrough the hinge pin it from one side of the piston 33 to the other,the hole being provided with a ball 45 in a seat 46 held in place by aretainer il. When the piston 33 is moved counter clockwise, hydraulicliquid flows freely from the closed side C of the working chamber to theopen side 0 of the chamber. When the piston is moved in the oppositedirection, the ball is forced into the seat 46 and shuts off the flow ofhydraulic fluid. In the movement of the piston, the flow of hydraulicfluid is further controlled by means of grooves of varyingcross-sectional area, cut in the under surface 31 of the reservoirbottom which serves as the upper closing wall for the hydraulic workingchamber. In the preferred arrangement, as shown in dotted lines in Figs.3-5 inclusive, a bypass groove 48 large enough to permit substantiallyunrestricted movement of the hydraulic fluid therethrough is provided inthe first part of the movement of the piston (in the direction ofclosing the hinge) following which the groove is tapered to graduallyretard the flow of hydraulic fluid by gradually decreasing thecross-sectional area; followed by a terminal groove 58 also indicated indotted lines in Figs. 3-5 inclusive and similar in cross-sectional areato the bypass groove 48, allowing free flow of hydraulic fluid. Thearrangement of connected bypass grooves thus described provides for theinitial unretarded closing of the hinge and the attached door bysuitable actuator means until the door approaches the fully closedposition, at which point the constricted groove retards the flow ofliquid and slows down the movement of the door, and then shortly beforereaching the final closed position, the hydraulic resistance is removedby the provision of the large cross-sectional area 5!! so that the dooris forced into the latch to the fully closed position.

The non-pressured reserve hydraulic liquid reservoir consists of anannular space between the reservoir bushing 38 and the hinge pin l8. Thereservoir is connected hydraulically with the working chamber by meansof check-valved orifices 56, one on each side of the piston andcommunicating with the outer ends of the grooves 48 and 58 respectively.The reservoir bushing is held in place within the cartridge housingagainst a shoulder formed at the base of hexagonal extension I! of thehinge pin by means of locking rings 58 and 59. The top portion of thereservoir is closed by the closing cap 28, and sleeve bearing 60 and 6!are provided between the hinge pin and the closing cap 60, a rubberO-ring 62 being provided around the hinge pin between the bearings 60and El to prevent leakage of hydraulic liquid. The radial position ofthe reservoir bushing is fixed by means of the key 63 in suitably placedholes in the reservoir bushing 38 and the dam 35. A closing cap 64 isprovided at the upper end of the opening in the hexagonal extension I!of the hinge pin I8.

A friction detent is provided between the cartridge I l and the upperpart casing l5 consisting of a top spring disk 5!, an intermediatespring disk 52 and lower spring disk 52A attached to rotate with theshaft extension H. A ball 53 is held in a hole in disks 52 and 52A andat times rolls upon a wedge 66 having a pin 6? insertable in the hole 68in the closing cap 28, to thereby frictionally and releasably hold theupper casing l5 at the desired angular position relative to thecartridge I l The upper leaf it of the hydraulic hinge is madeintegrally with the part-casing 55 adapted to flt over the upper portionof the hydraulic cartridge housing ii. A sleeve hearing $55 is providedbetween the cartridge and the inner surface of the part-casing I5; and ahexagonal cavity I'll is provided in the upper end of the part-casing l5adapted to non-rotatably enthe hexagonal shaft extension I'l. The cap(it is threaded into a hole in the end of the shaft extension 51' and isaccessible through an opening in the upper part of the part casing l5.

The lower leaf M is preferably made integrally with the lowerpart-casing l3 and is adapted to fit over the lower portion ofthecartridge housilig H, the cartridge being held against turning by theworm gear 20 as previously described.

The advantages of my improved holding and adjusting means for thehydraulic cartridge in the lower hinge casing Will be apparent. Minuteangular adjustment may be readily made by the use of a simple socketwrench in socket 24. The helical pinion or worm will retain its positionbecause of the low thread pitch, and will effectively key the cartridgeto the lower half-casing.

Reference is made to my co-pending applications, Serial No. 35,640,filed June 20, 1948 and Serial No. 714,705, filed Dec. 7, 1946, theformer application having for its subject matter the friction detentdisclosed herein, and the latter application covering a hydraulicchecking mechanism having a somewhat different piston construction.

I claim:

1. A hinge mechanism comprising a pair of leaves adapted for attachmentto a closure and to a closure mounting frame; a cartridge having acylindrical housing and a concentric shaft extension protruding from theupper end of said cartridge housing and containing hydraulic checkingmeans adapted to control the relative rotary movement of said shaftextension and said cartridge housing; a hollow upper part-casingextendin from the edge of one leaf, adapted to fit over and turn on theupper portion of said cartridge housing, and to non-rotatably engagesaid shaft extension; a hollow lower part-casing extending from the edgeof the other leaf, adapted to fit over the lower portion of saidcartridge housing; and gear means on said cartridge housing cooperatingwith gear means on said lower part-casin adapted for adjusting andholding the relative angular positions of said cartridge housing andsaid lower part-casing.

2. A hinge mechanism comprising a pair of leaves adapted for attachmentto a closure and to a closure mounting frame; a cartridge having acylindrical housing and a concentric shaft extension protruding from theupper end of said cartridge housing and containing hydraulic checkinmeans adapted to control the relative rotary movement of said shaftextension and said cartridge housing; a hollow upper part-casingextending from the edge of one leaf, adapted to fit over and turn on theupper portion of said cartridge housing, and to non-rotatably engagesaid shaft extension; a hollow lower part-casing extending from the edgeof the other leaf, adapted to fit over the lower portion of saidcartridge housing; and worm gear teeth in the periphery of saidcartridge housing and a worm pinion rotatably mounted in said lower partcasing disposed to operatively engage said gear teeth to adjust and holdsaid cartridge angularly in relation to said lower part-casing.

3. In a removable-cartridge type door hinge in which a cartridge unithaving a central shaft REFERENCES CITED The following references are ofrecord in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,203,197 Henry June 4, 1940FOREIGN PATENTS Number Country Date 554,169 France June 6, 1923

